Overall, pretty nice.Clean up some of the ends of your cut lines as they wrap around the form, see wrists. Try adding a cast shadow of the near side arm on the leg. Might create nice overlap. Darken the shadow directly under the far side foot. It is floating a little bit off the ground plane right now. Your human figure for scale is too dark, creating too much value contrast, it is what you see first when looking at the image. Bot looks like some more cut lines might make it a bit more believable and help the large scale. Shoulder to arm connection looks like a bit of suspect engineering?